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POST
Whisper to the agent

Authorizations

Authorization
string
header
required

An API key from Settings → API keys, sent as Authorization: Bearer kb_live_…. A workspace key starts kb_; a personal key starts kbp_ and acts as its owner.

Headers

Idempotency-Key
string
required

A unique key (a UUID works) for this request. Retrying with the same key returns the first answer instead of running twice.

Maximum string length: 255
Kallabot-Version
enum<string>

The API version to answer as, a date (YYYY-MM-DD). Leave it out for the current version (2026-11-07). An unknown version is refused with 400 unsupported_api_version.

Available options:
2026-11-07
Example:

"2026-11-07"

Path Parameters

call_id
string
required

Body

application/json
text
string
required
Required string length: 1 - 2000

Response

Successful Response

note
CallNote · object
required

The whisper, as kept on the call's record.

delivered_to
string | null

The agent runtime it was sent to.